JPH0330672B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a locking device for an engine hood of an automobile, and more particularly to a hood locking device designed to prevent unauthorized unlocking from inside the vehicle.

[Conventional technology]

The locking device for the engine hood is provided with a handle equipped with a locking mechanism in the driver's seat that locks or unlocks the hood by operating a key, and by pulling the handle toward you with the locking mechanism unlocked, the stem of the steering wheel can be opened. The hood can be opened by unlatching it using a flexible wire connected to the hood, and when the car is not in use, the lock mechanism is set to the locked state, making it impossible to operate the steering wheel, to prevent anyone other than the user from opening or closing the hood. This equipment has been used for a long time. An example is shown in US Pat. No. 3,796,075.
As shown in FIG. 6, a lock bolt 135 attached to the tip of a lock mechanism 115 housed inside a handle 110 engages with a keeper 137 provided on a bracket 112 when the lock is in the locked position by key operation. This makes it impossible to pull the flexible wire 114 using the handle 110, thereby preventing anyone other than the key holder from opening and closing the hood.

[Problem that the invention seeks to solve]

However, with the above structure, a third party may illegally enter the vehicle, destroy a part of the vehicle body, and use a file or the like to remove the lock bolt 135 and keeper 137.
There was a problem in that there was a possibility that the lock mechanism 115 would be scraped and the lock mechanism 115 would be broken, causing the hood to open.

Therefore, the technical problem of the present invention is to prevent theft from occurring by preventing the locked hood from being opened even if a third party enters the vehicle and commits an illegal act. .

[Means for solving problems]

The technical means taken by the present invention to solve the above technical problems are as follows.

The cylindrical part of an operating handle having a handle at one end of the cylindrical part is fitted into a cylindrical housing so as to be movable in the axial direction but not rotatable;
A key cylinder is fitted into the cylindrical part so as to be rotatable but immovable in the axial direction, an engagement groove opening at an end surface is provided in the key cylinder, a bent groove is provided extending into the engagement groove, and a bent groove is provided in the engagement groove. An engaging portion that engages with the bending groove when the key cylinder is in the unlocked position is provided on one side of the engaging metal that is inserted into the locking metal and is provided in an unrotatable manner, and one end is fixed to the other side of the engaging metal. The other end of the flexible wire was fixed to the end metal fitting inside the drive side hood lock.

〔Example〕

Next, an embodiment showing a specific example of the above-mentioned technical means will be described with reference to the drawings.

FIG. 1 shows a sectional view of the main part of an embodiment of the hood lock device of the present invention, in which a cylindrical housing 3 is provided with an operating handle 2 having a handle 2b at one end of the cylindrical portion 2a. The same number of concave grooves that fit into the plurality of stoppers 12 protruding from the inner surface of the outer end of the housing 3 are provided on the outer surface of the housing 3 so as to be movable in the axial direction. A groove 10 is provided so that an elastic ring 11 attached to the circumferential groove can move in the axial direction until it comes into contact with the stopper 12, but rotation with respect to the housing 3 is disabled due to the fit between the stopper 12 and the groove.

The inner layer key cylinder 4 housed in the operating handle 2 has a groove 5 of a constant length in the circumferential direction provided on the fitting surface.
A key (not shown) inserted from the outer end of the key cylinder is inserted within the length of the groove 5a by engagement with a fixing pin 5 provided on the operating handle corresponding to the groove.
It can be rotated by operating the handle, but cannot be moved in the axial direction with respect to the operating handle.

The key cylinder 4 is provided with an engagement groove 6a that opens on the end face, a bent groove 6 is provided extending from the engagement groove 6a, and one side of an engagement metal 8 that is inserted into the engagement groove 6a and provided so as not to rotate. is provided with an engaging portion 7 that engages with the bent groove 6 when the key cylinder 4 is in the unlocked position.
This aspect is shown in the locked state in FIG. 3 of the sectional view taken along the line A--A in FIG. 1, and in the unlocked state in FIG.

Also, the protrusion 16 that comes into contact with the outer cylindrical surface of the engagement groove
A switch 14 having a switch 14 is provided in the housing 3,
Switch 14 is electrically connected to the alarm device.
A cam surface 15 is formed on a part of the cylindrical surface that the protrusion 16 contacts, and in a key cylinder unlocking device, the protrusion 16 contacts the cam surface 15 to release the switch 14.
is turned off, and in the locked position, the switch 14 is turned on away from the cam surface and in contact with the cylindrical surface, and this state is shown in FIGS. 3 and 4.

The flexible wire 17 connected to the engagement alloy 8 has a wire guide 18a fixed to the end of the housing 3, a wire guide 18b provided on the drive side hood lock 13, and a wire guide 18a at both ends.
The end hardware 20 is guided by a conduit 19 fitted into the wire guide 18b and connected to a lever of a drive-side hood lock 13 latch (not shown).

Figure 2 shows the key cylinder 4 in the unlocked position.
This is a sectional view showing a state in which the operating handle 2 is pulled in the direction indicated by an arrow F, in which the elastic ring 11 comes into contact with a stopper 12 of the housing and stops, and the moving distance L is the maximum stroke of the operating handle 2. In this state, the protrusion 16 of the switch 14 contacts the cam surface 15 and maintains the off state, so the axial length of the cam surface 15 is made longer than the stroke L. As a result, the end hardware 20 of the wire 17 unlatches the drive side hood lock 13 and opens the hood.

[Effect]

The above technical means works as follows. When the key cylinder 4 is locked, the engaging portion 7 of the engaging metal 8 comes out of the bending groove 6, and the engagement between the engaging metal 8 and the key cylinder 4 is released. Therefore, the operating handle 2 can be opened from the outside. Even when pulled in the direction of arrow F, the engagement alloy 8 and the flexible wire 17 do not move in the same direction. Therefore, the food lock cannot be released. Also, when the key cylinder 4 is locked, someone who illegally enters the vehicle from outside destroys the hood lock device, forcibly turns the key cylinder 4 to the unlocked position, and pulls and tightens the operating handle 2. When trying to open the food lock, switch 14
detects the lock being unlocked and can sound an alarm.

〔Effect of the invention〕

The engaging groove that engages the engaging part to which the flexible wire is connected is formed on the key cylinder, which is the innermost layer of the device, so even if someone who illegally enters the car tries to unlock it with a file or hammer, it will not work. It is almost impossible to reach the engaging portion, which has the effect of preventing illegal acts.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a sectional view of the main part of the hood lock device, Fig. 2 is a partial sectional view of the operating handle shown in Fig. 1 when it is pulled, and Fig. 3 is a sectional view of the key. 1st in cylinder lock position
Figure 4 is a sectional view taken along the line A-A in Figure 1, Figure 5 is a perspective view of the key cylinder, and Figure 6 is a main part of a conventional food lock device. FIG. DESCRIPTION OF SYMBOLS 1... Operation part of the hood lock device, 2... Operation handle, 3... Housing, 4... Key cylinder, 5... Fixed pin, 6... Bend groove, 6a... Engagement groove, 7... Engagement Part, 8... Engagement alloy, 10...
Circumferential groove, 11...Elastic ring, 12...Stopper, 13...Drive side hood lock, 14...Switch, 15...Cam surface, 16...Protrusion.

Claims (1)

[Claims] 1. The cylindrical part of an operation handle having a handle at one end of the cylindrical part is fitted into the cylindrical housing so as to be movable in the axial direction but not rotatable, and the key cylinder is inserted into the cylindrical part. The key cylinder is fitted into the key cylinder so as to be rotatable but not movable in the axial direction, and the key cylinder is provided with an engagement groove that opens at the end face, and a bent groove is provided extending into the engagement groove, and the key cylinder is inserted into the engagement groove and is provided so as to be unrotatable. an engaging portion that engages with the bent groove in the unlocked position of the key cylinder is provided on one side of the engaged metal;
A hood lock device characterized in that the other end of the flexible wire, which has one end fixed to the other side of the engaging metal, is fixed to an end metal fitting in the drive side hood lock.